Dear Christian and FSL community,
Thank you so much for the swift answer. I would like a further help in interpreting the calculation of the delay (PE2 / PE1). If the result is 1 or around, this means that the delay is about 1 TR. In such case this would mean that:
- the shift in the HRF peak is considerable and I should be cautious in accepting the model,
- or, although the considerable shift in the HRF peak, the first order derivative in the model accounts with the effect and introduces corrections that turn the model valuable?
I’m facing this problem and I would appreciate sharing your experience to help me deciding.
Thanks in advance,
Jose Paulo Santos
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